A
shaft is a cylindrical rotating rod used for transmitting the power in a
machine. It basically delivers the power from the engine to other parts of the
automobile before reaching the wheels. Generally, shaft is made up of mild
steel or alloy steel. The gear is mounted on the shaft at required position.
Types
of gears and shafts:
The
four important type of gears are spur gears, helical gears, bevel gears, worm
gears. Among this, spur gear is the most commonly used gear type in which the
teeth are straight and parallel to shaft. In helical gear, teeth are twisted
and slanting to the gear axis. Bevel gear has the axes of two shafts intersect and the tooth of the gears are
conically shaped. The teeth of the worm gear is cut on an angle to be driven by
a worm. Shafts
are classified mainly into two types namely transmission shaft and machine
shaft. Counter shafts and line shafts are some of the transmission shafts while
crankshaft is a machine shaft.
Requirements
of gears and shafts:
•
They must be completely rust proof.
•
Precise design must be ensured for a fine finish.
•
They should be easy to fix.